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Fig. 1. T2* relaxation time mapping from 55-year-old woman with ductal carcinoma in situ. A. Sagittal contrast-enhanced T1-weighted image shows heterogeneous.

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Presentation on theme: "Fig. 1. T2* relaxation time mapping from 55-year-old woman with ductal carcinoma in situ. A. Sagittal contrast-enhanced T1-weighted image shows heterogeneous."— Presentation transcript:

1 Fig. 1. T2* relaxation time mapping from 55-year-old woman with ductal carcinoma in situ. A. Sagittal contrast-enhanced T1-weighted image shows heterogeneous non-mass enhancement left breast. Region of interest of breast cancer (red) and normal parenchyma (green) was manually outlined and later copied onto T2* map. B. Signal intensity changes on MR images were used to calculate intrinsic T2* relaxivity. R2* values were found by taking negative of linear slope of signal intensity plotted against echo time (TE) for each voxel, of which the gradient is–R2* (measured in 1/ms). Reciprocal of R2* was T2*. C. T2* map shows similar T2* value in breast cancer compared with surrounding glandular tissue. Mean T2* value of breast cancer and parenchyma were 22.7 and 18.9 ms, respectively. D. On coronal T2-weighted image, cancer in left breast was not prominent and classified as iso- signal intensity compared with breast parenchyma. Fig. 1. T2* relaxation time mapping from 55-year-old woman with ductal carcinoma in situ. A. Sagittal contrast-enhanced T1-weighted image shows heterogeneous non-mass enhancement left breast. Region of interest of breast cancer (red) and normal parenchyma (green) was manually outlined and later copied onto T2* map. B. Signal intensity changes on MR images were . . . Korean J Radiol Jan-Feb;18(1):

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